for the first time president obama and mitt romney will meet on stage. the president faced critic jim for a five year old speech. his running meat misspoke again. we go to denver for a preview. >> reporter: good morning. both of these candidates are under enormous pressure to perform tonight. they have been preparing for more than a month. yesterday we saw them both take a little break, try to get away from it all. then last night that video changed the conversation. >> in denver, romney went for mexican at chipotle along with ohio senator rob portman who has been playing the role of president obama in mock debates. in nevada the president who has been rehearsing with massachusetts senator john kerry as romney went to the hoover dam. >> it's spectacular. >> reporter: both left the day's campaigning to their number twos and that turned into trouble for team obama. in charlotte, vice president joe biden was trying to argue romney would raise taxes on the middle class. when he implied president obama's policies already have hurt. >> how they can justify rai